JP2002176965A - Device for installing filter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a device for installing filters for a double filter cigarette, with which contact firmness between a chip paper piece and an intermediate product of the double filter cigarette is increased in wrapping the intermediate product with the chip paper piece. SOLUTION: This device for installing filters has such a mechanism as to form a roll path for the intermediate product I between a rolling drum 14 and a roll guide 18 and, rolling the intermediate product I in the roll path, wraps the product I with a chip paper piece C. The roll guide 18 has a chip guide surface 28 and a cigarette guide surface 30 on a roll hand 20 of the guide 18 and the chip guide surface 28 contacts with a wrapping region of the chip paper piece C in roll stage of the intermediate product. The chip guide surface 28 is set closer to the peripheral surface of the rolling drum 14 than the cigarette guide surface 30, and thereby surface pressure to the intermediate product I is made larger than that of the cigarette guide surface 30.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a filter mounting apparatus for manufacturing a double filter cigarette corresponding to two filter cigarettes from two cigarettes and a filter plug.

[0002]

2. Description of the Related Art As is well known, a filter mounting device positions a filter plug between two cigarettes to form an intermediate product of a double filter cigarette, and wraps a tip paper piece around the intermediate product to form a double filter cigarette. Techniques related to this type of filter mounting apparatus are disclosed in, for example, Japanese Utility Model Publication No. Sho 62-16877 and Japanese Patent Application Laid-Open No. 9-275962.
In any case, rolling of an intermediate product is used for winding a tip paper piece. For example, in the case of the latter filter mounting apparatus, the chip paper piece is supplied along a predetermined supply path in a state where one side thereof is coated with glue. Further, a rolling plate is arranged along the supply path, and the rolling plate forms a rolling path for the intermediate product between the rolling plate and the supply path. When the intermediate product of the double filter cigarette is conveyed into the rolling passage, the intermediate product rolls and advances in the supply direction of the tip paper piece, and in this rolling process, the tip paper piece is wound around the outer periphery of the intermediate product. .

[0003]

By the way, it is desirable that the filter cigarette has a substantially uniform outer diameter at the cigarette portion and the filter portion in a finished product. For this reason, at the manufacturing stage of the filter rod or the cigarette rod, the outer diameter difference corresponding to the thickness of the tip paper piece is preset in these, and the outer diameter of the filter tip is slightly smaller than the outer diameter of the cigarette. I have.

However, when a tip paper piece is wound around an intermediate product of a double filter cigarette in a filter mounting device, a difference in outer diameter between each cigarette and the filter plug may cause poor adhesion of the tip paper. More specifically, since both side edges of the chip paper piece are wrapped around each cigarette and wrapped, the outer diameter of each cigarette is used as a reference for the winding diameter around the intermediate product.
On the other hand, since the outer diameter of the filter plug is smaller than the reference diameter, the tip paper piece is wound with a larger diameter than the filter plug. As a result, the adhesiveness between the glue-adhering surface of the chip paper piece and the outer surface of the filter plug tends to be impaired. Further, the paper roll of the filter plug has a porous rough surface, and has less adhesive property than the cigarette paper. For this reason, after the tip paper piece is wound around the intermediate product in the filter mounting device, the tip paper piece may be partially separated from the filter plug.

Further, since the difference in outer diameter between each cigarette and the filter plug also appears as a difference in their circumferences, a slight speed difference occurs between each cigarette and the filter plug during the rolling process of the intermediate product. Due to this speed difference, the winding of the tip paper piece around the intermediate product tends to be unstable. In view of the above, an object of the present invention is to provide a filter mounting device capable of securely winding a tip paper piece around an intermediate product of a double filter cigarette and having a strong bond between the filter plug and the tip paper piece.

[0006]

SUMMARY OF THE INVENTION The present invention relates to a method for winding a tip paper piece around an intermediate product of a double filter cigarette.
This problem has been solved by pressing the tip paper piece more strongly against the outer surface of the filter plug. Specifically, the filter mounting device of the present invention (Claim 1) supplies conveying means for conveying an intermediate product of a double filter cigarette along a conveying path, and supplies chip paper pieces along the conveying path, and a leading portion thereof. Supply means for bonding the intermediate product to the intermediate product, and a rolling guide arranged along the transport path and forming a rolling path for the intermediate product between the transport path and the rolling guide, and the rolling guide is provided in the rolling path. Rolling the intermediate product while rolling the tip paper piece around the intermediate product. In particular, the rolling guide includes a tip guide surface that comes into contact with the winding area of the tip paper piece and a pair of cigarette guide surfaces that comes into contact with the outer periphery of each cigarette during the rolling process of the intermediate product. It is provided closer to the transport path than the surface.

According to the above-described filter mounting apparatus, when the intermediate product is conveyed into the rolling passage, the contact force between the intermediate product and the tip guide surface relatively increases, while the contact force between the intermediate product and the cigarette guide surface increases. The contact force is relatively weakened. Therefore, the rolling power to the intermediate product given from the rolling guide is generated more strongly on the outer periphery of the filter plug than on each cigarette, so that the tip paper piece can be wound while being strongly pressed against the outer surface of the filter plug.

If the tip guide surface is knurled (claim 2), the grip force by the tip guide surface can be further increased, and slip of the intermediate product in the rolling passage is prevented and the rolling is performed. More stable. The above-described rolling guide includes a pair of grooves formed between the tip guide surface and the pair of cigarette guide surfaces and extending in the direction of the rolling passage (claim 3). The boundary area between the tip paper piece and each cigarette in the intermediate product is non-contact. For this reason, since the pressing force from the rolling guide does not directly act on both side edges of the chip paper piece, it is possible to effectively prevent the adhesive applied to the chip paper piece from running out.

Further, the tip guide surface of the rolling guide has a step between the inlet side and the outlet side in order to narrow the rolling path in the height direction immediately before the intermediate product finishes rolling for the first rotation. It is preferable to have (claim 4). Since this step makes the tip guide surface closer to the transport path at the exit side of the rolling passage, the pressing force against the tip paper piece further increases immediately before the rolling of the intermediate product completes the first rotation, The bonding is ensured.

[0010]

FIG. 1 schematically shows a partial configuration of a filter chip attachment (filter mounting device). As is well known, the filter tip attachment receives a double cigarette DS having a length of two cigarettes from a cigarette winding machine, and cuts it into two single cigarettes S in the process of transporting the double cigarette DS. Thereafter, these two single cigarettes S are separated in the axial direction to form a cigarette row.

The filter tip attachment includes a hopper (not shown), and a large number of filter rods are stored in the hopper. Filter rod is 1 from inside the hopper
Each of the filter plugs FP is fed out one by one, and is cut for each filter plug FP having a length of, for example, two filter chips during the transport process. Further, the filter plugs FP are lined up in a row in the conveying direction through a grading process.
To the hopper drum 4.

The cigarette row described above has an interval between each single cigarette S that can receive the filter plug FP, and is supplied to the hopper drum 4 while maintaining this interval. At this time, the cigarette rows receive the filter plugs FP between the cigarettes S and are arranged on the same axis as the filter plugs FP. The hopper drum 4 is provided with a pair of floating disks (not shown) on both sides as viewed in the direction of rotation. With the rotation of the hopper drum 4, each cigarette S is sandwiched between the floating disks on both sides, and the gap is reduced in the axial direction. . Thereby, the intermediate product I of the double filter cigarette in which the filter plug FP is positioned between two single cigarettes S
Is formed.

The filter tip attachment is provided with a roll of tip paper (not shown), and a web W of the tip paper is fed from the roll. The coke drum 6 is arranged adjacent to the lower part of the hopper drum 4 described above, and the web W is fed by a feeding roller (not shown) and guided to the coke drum 6. The web W of the tip paper is coated with glue on one side thereof in front of the coke drum 6. Specifically, a glue roller 10 is disposed at a position before the coke drum 6.
0 rotates with the lower half immersed in the size liquid. The transmission roller 12 is disposed adjacent to the glue roller 10, and the glue attached to the outer peripheral surface of the glue roller 10 is transferred to the outer peripheral surface of the transmission roller 12 with a predetermined layer thickness. The transmission roller 12 rolls on one side as the web W passes, and applies glue according to a predetermined coating pattern.

The coke drum 6 has a suction surface on its outer periphery, and rotates while holding the web W on the suction surface. Further, a bladed drum 8 is arranged close to the coke drum 6, and the bladed drum 8 has a large number of coke knives (not shown) on its outer periphery. These coke knives are arranged at regular intervals, and rotate in synchronization with the coke drum 6 with the rotation of the bladed drum 8. The web W is cut into individual chip paper pieces C on the suction surface of the coke drum 6 by these rotating coke knives.

Further, the coke drum 6 rotates while sucking and holding the chip paper pieces C after cutting, and supplies the chip paper pieces C to the intermediate product I of the double filter cigarette on the hopper drum 4. The tip paper piece C is stuck to the outer surface of the intermediate product I from its leading end, and together with the intermediate product I, the hopper drum 4
Conveyed above. Further, a rolling drum 14 is disposed adjacent to the hopper drum 4, and the rolling drum 1
4 receives the intermediate product I of the double filter cigarette together with the chip paper piece C. As is known, the rolling drum 14 has on its outer peripheral surface a winding support 16 parallel to the intermediate product I. The winding support 16 has a suction holding surface having an arc-shaped cross section at the front and rear when viewed in the rotation direction of the rolling drum 14, and the suction holding surface on the front side is recessed inside the rolling drum 14. The intermediate product I is first held on the suction holding surface on the rear side of the winding support 16, and is conveyed to the roll hand 16 as the rolling drum 14 rotates.

A rolling guide 18 is disposed between the hopper drum 4 and the rolling drum 14, and the rolling guide 18 extends upward in the rotation direction of the rolling drum 14. A rolling passage for the intermediate product I is formed between the outer periphery of the rolling drum 14 and the rolling guide 18, and the rolling passage is curved along the outer periphery of the rolling drum 14.

FIGS. 2 to 4 specifically show the rolling guide 18. FIG. The rolling guide 18 has a roll hand 20 at its lower part, and a fixed arm 22 extends upward from the roll hand 20. The fixed arm 22 is a body of a filter tip attachment (not shown).
Fixed to. One surface of the roll hand 20, that is, the surface facing the rolling drum 14, has an arc shape along the outer periphery of the rolling drum 14. Also,
The overall width of the roll hand 20 is smaller than the overall length of the intermediate product I, and the width of the opposing rolling drum 14 is also smaller than the overall length of the intermediate product I. Therefore, on the outer peripheral surface of the rolling drum 14, the front ends of the cigarettes S on both sides protrude to the side of the rolling drum 14. As a result, each cigarette S is brought into a non-contact state at the tip end, and the tobacco cut in the rolling process is not rubbed or loosened.

As shown in FIG. 2, the intermediate product I of the double filter cigarette is conveyed to the roll hand 20 from below. The roll hand 20 has a plurality of center fingers 24 and side fingers 26 extending in the downstream direction as viewed in the transport direction. In this arrangement, a pair of center fingers 24 is located at the center and symmetrical on both sides. In this case, two pairs of side fingers 26 are located. The tips of the center and side fingers 24 and 26 are close to the outer peripheral surface of the hopper drum 4 and respectively penetrate into circumferential grooves (both not shown) formed in the winding support of the hopper drum 4. Therefore, the intermediate product I transported from the hopper drum 4 to the transfer position to the rolling drum 14 is transferred from the hopper drum 4 to each of the fingers 24, 26.
And is reliably fed into the rolling passages described above. The tips of the fingers 24 and 26 are appropriately chamfered into a curved shape.

As shown in FIG. 2, the arc surface of the roll hand 20 is divided into a central chip guide surface 28 and a pair of cigarette guide surfaces 30 on both sides thereof.
Among them, the cigarette guide surface 30 is hatched in the figure. When the intermediate product I fed into the rolling passage as described above rolls in the rolling passage, the center chip guide surface 28 contacts the winding area of the chip paper piece C, and the cigarette guide surfaces on both sides thereof. 30 is cigarette S
Contact The center finger 24 forms the same arc surface as the chip guide surface 28, and the side finger 26
Form the same arc surface as the cigarette guide surface 30.

As is clear from FIG. 3, the tip guide surface 28 and the cigarette guide surface 30 have different curvatures. Specifically, the radius of curvature R of the tip guide surface 28
_The radius of curvature R ₂ of the cigarette guide surface 30 is slightly larger than R ₁ (R ₁ <R ₂ ), and the tip guide surface 28 has an outer periphery of the rolling drum 14 by the difference (= R ₂ −R ₁ ). Close to the surface. Therefore, the height of the rolling passage is smaller in the tip guide surface 28 than in the cigarette guide surface 30 in the direction of the passage.

As shown in FIG. 2, the tip guide surface 28 is partially knurled, so that the grip force of the tip guide surface 28 is increased. Note that knurling may be performed on the entire area of the tip guide surface 28. The type of knurling can be various types of processing in addition to the streaks shown.

FIG. 4 shows the rolling path in the direction of the path.
A step is provided between the tip guide surface 28 and the cigarette guide surface 30 by the above-described difference in the radius of curvature (= R ₂ −R ₁ ). The width W of the tip guide surface 28 is set slightly smaller than the width of the tip paper piece C. Grooves 32 are formed in the roll hand 20 between the tip guide surface 28 and the cigarette guide surfaces 30 on both sides thereof, and these two grooves 32 roll along both side edges of the tip guide surface 28. The passage extends in the direction of the passage. Intermediate product I
When the paper rolls in the rolling path, the tip paper piece C is positioned on both sides of the tip guide surface 2 against the roll hand 20.
8 and overhangs in each groove 32. Therefore, the boundary area between the tip paper piece C and each cigarette S does not contact the roll hand 20 within the width of the groove 32. Similarly, two circumferential grooves 34 are formed on the outer periphery of the rolling drum 14 so as to face the grooves 32 of the roll hand 20.

[0023]

First, the formation of a double filter cigarette by the filter mounting apparatus of the above-described embodiment will be described as a first example. Double Filter Cigarette Intermediate I
There is an outer diameter difference between the filter plug FP and each cigarette S, and specifically, the outer diameter Ds of the cigarette S is slightly larger than the outer diameter Df of the filter plug FP (FIG. 2). The difference between the outer dimensions Df and Ds is based on a product standard set in advance when the filter rod and the cigarette rod are manufactured.

When the intermediate product I of the double filter cigarette is conveyed into the rolling passage, the tip guide surface 28 is closer to the outer peripheral surface of the rolling drum 14 than the cigarette guide surface 30, and the tip guide surface 28 Of the cigarette guide surface 30 is relatively reduced. For this reason, the tip paper piece C is strongly pressed against the outer periphery of the intermediate product I during the rolling process of the intermediate product I. As a result, the adhesion between the chip paper piece C and the intermediate product I is improved, and the adhesion is strong. Become.

The knurling of the tip guide surface 28 reliably prevents the intermediate product I from slipping in the rolling passage. In particular, if knurling is performed from the entrance area of the rolling passage as shown in FIG. 2, the tip paper piece C is reliably wound from the start of winding. FIG. 5 shows a rolling guide 18 according to a second embodiment of the filter mounting apparatus. The roll hand 20 of the rolling guide 18 has a step in the area of the tip guide surface 28 described above. Specifically, the tip guide surface 28 is provided only on the entrance side when viewed in the direction of the rolling passage, and the rear tip guide surface 36 is provided on the exit side via a step.
The rear tip guide surface 36 is closer to the outer peripheral surface of the rolling drum 14 than the tip guide surface 28, so that the rolling passage is narrower in the height direction on the outlet side than on the inlet side in the direction of the passage. I have.

FIG. 6 shows the winding of the tip paper piece C using the rolling guide 18 according to the second embodiment. In this case, the intermediate product I of the double filter cigarette is conveyed into the rolling passage, and the distance L from the position where the rolling starts to the rear tip guide surface 36 is set to be less than one rotation length of the intermediate product I. ing. For this reason, the rolling passage is narrowed in the height direction immediately before the intermediate product I completes the first rotation, and the intermediate product I
With the rolling, the first rotation can be completed by overcoming the step between the tip guide surface 28 and the rear tip guide surface 36. On the rear chip guide surface 36, the pressing surface pressure against the intermediate product I is larger than that of the chip guide surface 28, so that the end of the winding of the chip paper piece C is more securely bonded.

As described above, since the boundary area between the tip paper piece C and each cigarette S is not contacted by the groove 32, it is difficult for this boundary area to be strongly pressed during the rolling process of the intermediate product I. Absent. For this reason, the glue applied to the tip paper piece C is prevented from protruding, and the appearance quality after the winding is preferably maintained. When the winding of the tip paper piece C around the intermediate product I is completed, a double filter cigarette DF as a finished product is obtained. Thereafter, the double filter cigarette DF undergoes a paste drying process on the rolling drum 14 and is transferred from the rolling drum 14 to the next drum row (not shown). The double filter cigarette DF is cut at the center of the filter plug FP to form individual single filter cigarettes.

In the double filter cigarette DF obtained by each of the above-described embodiments, the tip paper piece C and the filter plug FP are firmly adhered to each other and firmly adhered over the entire circumference. No partial peeling occurs. Further, in the second embodiment, the adhesion at the end of the winding of the chip paper piece C can be obtained more strongly. Further, even in the second embodiment, it is effective to subject the tip guide surface 28 and the rear tip guide surface 36 of the roll hand 20 to knurling. The knurled tip guide surface 28 and rear tip guide surface 36 increase the gripping force of the intermediate product I during the rolling process, and can further stabilize the winding of the tip paper piece C.

In the present invention, in particular, the chip guide surface 28
Even if the knurling of the rear chip guide surface 36 is not performed, the intermediate product I can be reliably rolled by the smooth chip guide surface 28 and the rear chip guide surface 36. The present invention is not limited to the embodiments described above, but can be implemented in various forms. For example, the rolling passage may be formed between the coke drum and the rolling guide. In this case, an inlet drum and an outlet drum are respectively arranged before and after the coke drum, and between the inlet drum and the outlet drum. Rolling guides (rolling plates) are arranged over the bridge.

[0030]

According to the present invention, there is provided a filter mounting apparatus according to the present invention.
Can ensure that the tip paper piece is wrapped around the intermediate product of the double filter cigarette, and can enhance the adhesion. If the gripping force on the tip guide surface of the rolling guide is enhanced (claim 2), the rolling is more stable than the rolling of the intermediate product from the beginning of the winding of the tip paper piece.

In particular, if the boundary area with each cigarette is kept out of contact during the winding process of the chip paper piece (claim 3), the glue is prevented from protruding from the chip paper piece,
The appearance of the double filter cigarette is also of high quality. Further, if the pressing force against the tip paper piece is increased immediately before the end of the winding of the tip paper piece (claim 4), the adhesion to the end of the tip paper piece is further improved, and the occurrence of defective winding is reliably prevented. Can be.

[Brief description of the drawings]

FIG. 1 is a schematic diagram illustrating a configuration of a filter mounting device according to an embodiment.

FIG. 2 is a front view specifically showing a rolling guide.

FIG. 3 is a cross-sectional view of the roll hand taken along line III-III in FIG.

FIG. 4 is a sectional view of the roll hand taken along the line IV-IV in FIG.

FIG. 5 is a front view of a roll hand according to a second embodiment.

FIG. 6 is a side view showing a tip paper piece wound by the roll hand of FIG. 5;

[Description of Signs] 4 Hopper drum (conveying means) 6 Coke drum (supplying means) 14 Rolling drum (conveying means) 18 Rolling guide 28 Chip guide surface 30 Cigarette guide surface 32 Groove 36 Rear chip guide surface

Claims (4)

[Claims] 1. A filter for forming a double filter cigarette by positioning a filter plug between two cigarettes to form an intermediate product of a double filter cigarette, and then winding a tip paper piece coated with glue on one surface around the intermediate product. In the mounting device, a transport unit that transports the intermediate product along a predetermined transport route, a supply unit that supplies the chip paper piece along the transport route, and adheres a leading portion to the intermediate product, The tip paper is arranged along the transport path on the downstream side of the supply means, forms a rolling path for the intermediate product with the transport path, and rolls the intermediate product in the rolling path. A rolling guide for winding a piece around the intermediate product, wherein the rolling guide contacts a winding area of the tip paper piece in a process of rolling the intermediate product. A filter mounting comprising: a guide surface and a pair of cigarette guide surfaces that contact the outer periphery of each cigarette, wherein the tip guide surface is provided closer to the transport path than the pair of cigarette guide surfaces. apparatus. 2. The filter mounting device according to claim 1, wherein the tip guide surface is knurled. 3. The rolling guide further includes a pair of grooves formed between the tip guide surface and the pair of cigarette guide surfaces and extending in the direction of the rolling passage. The filter mounting apparatus according to claim 1, wherein a boundary region between the tip paper piece and each of the cigarettes in the intermediate product is not in contact with each other. 4. The tip guide surface is provided between an entrance side and an exit side of the rolling passage so as to narrow the rolling passage in a height direction immediately before the intermediate product finishes rolling for the first rotation. 4. The filter mounting apparatus according to claim 1, wherein a step is provided between the filter mounting apparatuses.